Critical Fusion Frequency and Audio-Visual Reaction Time as a Function of Age

Authors

  • Shankarappa V, Prakash S B, Prabha V

DOI:

https://doi.org/10.37506/ijop.v7i2.223

Keywords:

Audio-visual reaction time, Critical Fusion Frequency, Age.

Abstract

Background & objective

Aging is associated with physiological changes in functioning of different parts of the body. One of the changes commonly seen in elderly persons is slowness of the movements. Many studies concluded that audio-visual reaction time (RT) increases with age. Critical fusion frequency (CFF) is the frequency at which an intermittent light stimulus appears to be completely steady to the observer. It is been observed that CFF decreases with age. But whether this decrease is a progressive phenomenon is not clear. Hence, the present study was designed to investigate CFF in various age groups.

Materials & method

The study involved hundred subjects within the age group of 20–70 years. Subjects were divided into five age groups. Audio-visual reaction time and critical fusion frequency were measured. Data was statistically analyzed by using one way ANOVA for group wise changes in RT and CFF. Relationship between visual RT and CFF was found out by Pearson's coefficient of correlation.

Results

Visual RT and Audio RT were positively and significantly correlated with age whereas CFF was significantly and negatively correlated with age in male and females separately as well as when combined together. (p<0.001)

Conclusion

From our study we conclude that the RT increases and CFF decreases with age. These changes are similar in both male and female subjects.

Author Biography

  • Shankarappa V, Prakash S B, Prabha V

    Shankarappa V1, Prakash S B2,*, Prabha V3

    1Associate Professor, Department of Physiology, Sambram Institute of Medical Sciences, Kolar Gold Fields, Karnataka, India

    2Assistant professor, Department of Physiology, Koppal Institute of Medical Sciences, Koppal, Karnataka, India

    3Associate professor, Department of Physiology, Chamarajanagar Institute of Medical Sciences, Chamarajanagar, Karnataka, India

Downloads

Published

2019-07-20

Issue

Vol. 7 No. 2 (2019): International Journal of Physiology

Section

Articles

License

Copyright Ownership: Authors retain copyright ownership of their work after publication in IJOP. However, they grant the journal an exclusive Creative Commons license.

Creative Commons License: The authors grant IJOP the right to exclusively apply a Creative Commons license to their work upon publication. This license permits use, distribution, and reproduction of the work in any medium, provided that the original work and its source are properly cited. The specific license applied is Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0), which allows for attribution, non-commercial use, and derivative works.

Editorial Research: Authors grant the journal the right to analyze information obtained from submitted manuscripts for editorial research purposes. This analysis aims to improve the peer-review process, teaching, and training activities.

Warranties: Authors warrant that their work is original, contains no libelous statements, is lawful, and does not infringe upon any copyright, trademark, patent, or proprietary rights of others. Authors agree to indemnify the editors against any costs, expenses, and damages arising from any breach of this warranty.

Views and Opinions: The views and opinions expressed in the article are those of the authors and not necessarily those of the journal.

How to Cite

Critical Fusion Frequency and Audio-Visual Reaction Time as a Function of Age. (2019). International Journal of Physiology, 7(2), 154-158. https://doi.org/10.37506/ijop.v7i2.223